Building block



FIG. 1 is a top isometric view of my new design for a building block

FIG. 2 is a bottom isometric view of FIG. 1.

FIG. 3 is a top plan view of FIG. 1.

FIG. 4 is a bottom plan view of FIG. 1 is a front side elevation view of FIG. 1.

FIG. 5 is a cross sectional view taken along line 5-5 of FIG. 3.

FIG. 6 is a cross sectional view taken along line 6-6 of FIG. 3.

FIG. 7 is a side elevation view of the left side of FIG. 1, the right side being a mirror image thereof.

FIG. 8 is a front side elevation view of FIG. 1.

FIG. 9 is a back side elevation view of FIG. 1; and,

FIG. 10 is a close up top plan view of the front end of the building block. 

CLAIM The ornamental design for a building block, as shown and described. 